Step 3: Re-Cap

Take your "sealed" cap and place it on your newly filled bottle. Ours went on easily and screwed in just like it came from the store.

Pack in your suitcase just like you normally would your mouthwash.

For those of you attempting with a container that's not opaque (this mouthwash contains hydrogen peroxide - which is photosensitive), add a few drops of food coloring ;) It won't change the flavor, but will become a very potent stain adder. So be careful ;)

Step 4: Implications

I can only imagine. Without being able to cite, I'm going to go out on a limb and call this illegal - or close to it. The cruise liner set the rule - not customs (to me knowledge). But there may be duties on alcohol when you enter other countries.

Similarly, this could be used for other forms of "evil." I hope you're not too paranoid to think that the cutting edge of this evil is college spring break at sea ;)

I know this is a bit off topic, but my (utterly brilliant) dentist warned me about this product recently: she says she's had way too many patients recently who use this stuff and that it's been causing gum damage. Hydrogen peroxide over time can definitely eat away living tissue. Not cool!

Just as an FYI, it's also the ingredient in most tooth whitening products, and likely what it's there for in this case.
It also is not the best stuff to get on one's skin. Not highly toxic, but bleaching.

Yes it is, until people get wise about things. Back in high school this was the thing to do until teachers started opening all closed containers to make sure. My classmates were not too smart though, they used shampoo bottles so you would get a nice soapy flavor.

These soft drinks containers (picture) worked well at an open-air music festival. No bottles or cans allowed inside, and same as the boat, drinks not cheap inside. Also, they fit in pockets easily, and don't look that suspicious.

Miami--Miami
Porting somewhere in Mexico and some other location (probably a Caribbean island). I'm not going on this one, my sister and her friends are :)
Apparently the ship is less than a year old :P

They did this in a movie called Toy Soldiers. Sean Astin played the 'Rebel' teenager that smuggled actual booze into the school in mouthwash bottles. It was part peppermint schnaupes and part vodka. Looks and tastes exactly like mouthwash :)